Lithium-polymer jump starter powerful enough to start 12V vehicles (both gas and diesel) including cars, trucks, boats, ATVs, motorcycles and more.Charges any USB device including phones, tablets and speakers with the 3-in-1 USB charging cord included.Made with durable, high-quality components, plus built-in safety and circuitry protections and can work in temperatures ranging from -4°F to 140°F.Long lasting only loses 2% charge per month when stored.1000 full charge and discharge cycles.So affordable it pays for itself after just one jump.